Merthyr Mawr Warren National Nature Reserve
Merthyr Mawr Warren National Nature Reserve
4.1
(19)
5,209
runners
286
runs
Jogging around Merthyr Mawr Warren National Nature Reserve offers diverse terrain across one of Wales' largest dune systems. The landscape features expansive sand dunes, including "The Big Dipper," alongside grasslands, saltmarsh, and woodlands. Runners can also find trails along the Ogmore River and a wide beach, providing varied surfaces from soft sand to more stable paths. This area combines natural beauty with historical landmarks, making it suitable for different running experiences.
Last updated: September 27, 2026
5.0
(1)
162
runners
9.73km
01:10
80m
80m
Moderate run. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
155
runners
8.59km
01:04
110m
110m
Moderate run. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.

102
runners
28.3km
03:09
360m
360m
Hard run. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
54
runners
10.1km
01:12
150m
150m
Moderate run. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
5.0
(1)
52
runners
8.75km
00:56
40m
40m
Moderate run. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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The sand appears to have been replenished in areas - approx half a mile unrideable, expect hike a bike and soft sand up to your ankles!
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There is a new path 15m down from the original route which rejoins the cut part way down
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Great ride and awesome scenery
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don't follow me, you'll have to go back on yourself! luckily there was a desire path not too far down
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Great walking, views are stunning on clear day, rock formations on low tide are fascinating.
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Merthyr Mawr Warren National Nature Reserve offers a wide selection of running routes, with nearly 320 trails available. These range from easy loops to more challenging runs across varied terrain.
You'll encounter a diverse range of terrain, from expansive sand dunes, including the famous 'The Big Dipper', to grasslands, saltmarsh, and woodlands. Many routes also feature trails along the Ogmore River and a wide beach, offering surfaces from soft sand to more stable paths. This variety provides both a challenging workout and scenic views.
Yes, the reserve is rich in history and natural beauty. You can run past the impressive ruin of Candleston Castle, an ivy-covered medieval structure. Across the Ogmore River, you'll find Ogmore Castle with its distinctive stepping stones. The area also boasts 'The Big Dipper', Wales' highest sand dune, and was even a filming location for 'Lawrence of Arabia'. For more information on the reserve's unique features, you can visit Visit Wales.
Yes, many trails are suitable for families, offering easier loops and less challenging terrain. The varied landscape provides engaging experiences for all ages, though some dune climbs might be more strenuous. Look for routes marked as 'easy' to find the most family-friendly options.
Merthyr Mawr Warren National Nature Reserve is generally dog-friendly, but it's important to keep dogs under close control, especially due to the sensitive wildlife and grazing animals in certain areas. Always check local signage for specific restrictions or requirements.
Absolutely. While the reserve is known for its challenging dunes, there are 45 routes classified as easy, providing gentler paths suitable for beginners or those looking for a less strenuous run. These often follow more stable paths through woodlands or along the river.
For experienced runners seeking a challenge, Merthyr Mawr Warren is a 'trail-running paradise'. The reserve features 64 difficult routes, including ascents of 'The Big Dipper' and longer distances that test endurance across varied and sometimes soft terrain. The 'Rabbit Run Wales' event even utilizes these challenging trails.
Yes, many of the running routes in Merthyr Mawr Warren are circular, allowing you to start and finish at the same point. A popular example is the Candleston Castle loop from Newton, which offers views of the historic castle and varied terrain.
Parking is available at various points around the reserve, often near popular access points like Candleston Woods or Ogmore-by-Sea. Specific parking details can usually be found on local signage or by checking the starting points of individual routes on komoot.
The running routes in Merthyr Mawr Warren National Nature Reserve are highly rated by the komoot community, with an average score of 4.0 stars from over 10 reviews. Runners often praise the unique and diverse landscapes, the challenge of the dunes, and the beautiful coastal and riverside views.
The reserve offers a unique experience year-round. Spring and autumn provide pleasant temperatures and vibrant scenery. Summer is ideal for coastal runs and enjoying the beach, though the dunes can be more challenging in direct sun. Winter runs can be dramatic, with crisp air and fewer crowds, but paths might be softer or wetter.
Yes, there are options for refreshments nearby. For instance, the Coffi Co Lounge loop from Newton suggests a starting point near a cafe, providing a convenient spot for a pre- or post-run drink and snack.
Merthyr Mawr Warren stands out due to its expansive and dynamic sand dune system, including 'The Big Dipper', which provides a challenging and ever-changing running surface. The blend of coastal views, riverside trails, ancient woodlands, and historical landmarks like Candleston Castle creates a truly distinctive and memorable running experience.


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